Tylenchulus

 

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Rev 12/18/2023

  Classification Hosts
Morphology and Anatomy Life Cycle
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Classification:

      Tylenchida
       Tylenchina
        Criconematoidea
        Tylenchulidae
         Tylenchulinae

          Tylenchulus Cobb, 1913

Type species of the genus: Tylenchulus semipenetrans Cobb, 1913
   

Synonyms:
      None.

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Morphology and Anatomy:

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 All stages: Excretory pore situated very posteriorly (65-85% of body length); pore surrounded by small, irregularly shaped lobes; excretory duct directed forward. 

Females: Fixed into the root by anterior part of body.  Body slightly crescent-shaped.  

Vulva posterior, but not terminal.    Postvulval region short, tapering, ventrally curved and bluntly rounded in T. semipenetrans); almost straight, conoid, finely rounded in T. furcus.

Anus obscure or absent (T. semipenetrans).  

No uterine cyst.  
Males: Stylet degenerate. 

No penial tube.  

Lateral field with two lines (T. semipenetrans) or two plus two faint inner lines (T. furcus).

[Ref: Raski & Luc, (1987).]



Body size range for the species of this genus in the database - Click:
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Distribution:

 

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Economic Importance:

 

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Feeding:
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Hosts:
For an extensive host range list for this genus, click
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Life Cycle:

For Ecophysiological Parameters for this genus, click 
 
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Damage:

 

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Management:

 

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References:

Raski, D.J. and Luc, M. 1987. A reappraisal of Tylenchina (Nematoda) 10. The superfamily Criconematoidea Taylor, 1936. Revue de Nematologie 10:409-444.

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Copyright © 1999 by Howard Ferris.
Revised: December 18, 2023.